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10
Unbalanced Amplifier Connection
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ÇÇÇ
ÇÇÇ
ÇÇÇ
ÇÇÇ
Message
output
jack
(Unbalanced
3.5 mm dia.
mini-plug)
•
Cable: single-conductor, shielded
MVVS (0.3 to 0.5 mm
2
)
•
Cable length: 20 m max.
(0.3 to 0.5 mm
2
)
(Unbalanced phone plug)
Unbalanced
amplifier
Balanced Amplifier Connection
ÉÉ
ÉÉ
Message
output
jack
(Unbalanced
3.5 mm
dia.mini-plug)
•
Do not allow the shielded cable to
touch the plug terminal.
•
Cable: 2-conductor shielded MVVS
(0.3 mm
2
)
•
Cable length: 80 m max.
(0.3 mm
2
)
(Balanced phone plug)
Balanced
amplifier
Wiring
•
Separate the speaker and amplifier cables from the power cables.
•
Make sure that the output specifications of external devices match the
Voice Unit specifications.
•
When connecting an amplifier or speaker, check the devices respective
specifications: the ratings and functions of the amplifier and speakers may
vary for different applications.
Note The Voice Unit is supplied with one accessory unbalanced mini-plug (3.5 mm
diameter).
The Voice Unit is equipped with an RS-232C port which allows connection to
a computer, or PROM Writer for the purpose of storing messages.
Connector Pin No. and Signal Name
B1
B2
B3
A1
A2
A3
RS-232C port
(6-pin connector)
Pin No.
Signal
Signal Name
I/O
A1
SD
Send data
Output
A2
RTS
Request to send
Output
A3
FG
Frame ground
---
B1
RD
Receive data
Input
B2
CTS
Clear to send
Input
B3
SG
Signal ground
---
RS- 232C Port Pin
Specifications
Input/Output Device Connections
Section 1-3
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